package viz.flutter.plugin.paddle_ocr

import PaddleOCRDelegate
import androidx.annotation.NonNull

import io.flutter.embedding.engine.plugins.FlutterPlugin
import io.flutter.plugin.common.MethodCall
import io.flutter.plugin.common.MethodChannel
import io.flutter.plugin.common.MethodChannel.MethodCallHandler
import io.flutter.plugin.common.MethodChannel.Result
import io.flutter.embedding.engine.plugins.activity.ActivityAware
import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding

/** PaddleOcrPlugin */
class PaddleOcrPlugin : FlutterPlugin, MethodCallHandler, ActivityAware {
    /// The MethodChannel that will the communication between Flutter and native Android
    ///
    /// This local reference serves to register the plugin with the Flutter Engine and unregister it
    /// when the Flutter Engine is detached from the Activity
    private lateinit var channel: MethodChannel
    private var activityBinding: ActivityPluginBinding? = null

    override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
        channel = MethodChannel(flutterPluginBinding.binaryMessenger, "paddle_ocr")
        channel.setMethodCallHandler(this)
    }

    override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) {
        when (call.method) {
            "getPlatformVersion" -> {
                result.success("Android ${android.os.Build.VERSION.RELEASE}")

            }
            "ocrFromImage" -> {
                val paddleOCRDelegate = PaddleOCRDelegate(activityBinding!!.activity, result, call)
                val args = call.arguments as Map<String, Any>
                paddleOCRDelegate.getOCRResultFromImage(args["imagePath"].toString())
            }
            else -> {
                result.notImplemented()
            }
        }
    }

    override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) {
        channel.setMethodCallHandler(null)
    }

    override fun onAttachedToActivity(binding: ActivityPluginBinding) {
        activityBinding = binding
    }

    override fun onDetachedFromActivityForConfigChanges() {
    }

    override fun onReattachedToActivityForConfigChanges(binding: ActivityPluginBinding) {
    }

    override fun onDetachedFromActivity() {
        activityBinding = null
    }
}
